Transcript
BLOOD VESSELS
Tunica interna (intima)
Inner layer of arteries and veins
Endothelium made of simple squamous epithelial cells
Tunica media
Consists of smooth muscle
Tunica externa (adventitia)
Made of connective tissue
Artery
Arteriole
Small blood vessel coming off a larger artery
Capillary
Filled with red blood cells
Smallest of the body’s blood vessels
VenuleSmall blood vessel feeding into a larger vein
Arteriole and Venule Compared
Arteriole
Venule
Vein
One-way valve
Oxygenated blood (red vessels)
Deoxygenated blood (blue vessels)